JP2886940B2 - Gas stove with fire safety device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas stove with a fire safety device designed to prevent a fire from igniting on a sleeve or the like of a garment while the gas stove is in use. Old people, handicapped people,
It is proposed as a safety measure for children.

[Prior Art] In the conventional gas stove, the one with a fire extinguishing safety device depends on it, but there is no device to prevent this when a sleeve or the like of clothes is likely to catch fire.

[Problems of the prior art] Therefore, in the case of a gas stove where an open flame is burning on the top plate, if the sleeve approaches the fire too much, there is a concern that the sleeve may catch fire. If you are worried.

The present invention is proposed in view of the above point, and proposes a gas stove with a fire safety device that automatically extinguishes a fire when a sleeve or the like is likely to catch fire while using the gas stove, thereby eliminating the risk of a burn or a fire. The purpose is to do.

[Means for Solving the Problems] The configuration of the present invention proposed as means for achieving the above object is as follows.

A sensor for detecting that clothing has entered the ignition zone, and a safety valve for stopping gas and extinguishing the gas burner when a signal indicating that clothing has entered the ignition zone is input from the sensor. Gas stove with device.

In the above configuration, the sensor is used for normal use, such as a cooking operation or setting a pot or kettle on fire,
It is necessary to distinguish the danger of ignition, and if it is not sufficient, the fire will be extinguished frequently and the usability will be poor. To this end, when considering the normal use operation, since this is performed in a range slightly higher than the top plate, the sensor is located on the near side (front side) of the gas stove and close to the top plate. It is preferable to detect intrusion of a sleeve or the like. As a practical type of sensor, a light-shielding type optical sensor can be considered at present, but a reflective type optical sensor, an ultrasonic sensor, or a contact type sensor that detects a touch of a sleeve or the like can also be used. .

[Operation] When, for example, the sleeve enters the sensing range (ignition range) of the sensor during use of the gas stove, a signal is sent from this sensor, the safety valve closes, and the gas stops.

[Example] Fig. 1 shows a table type gas stove according to the present invention, in which reference numeral 1 denotes a gas stove main body, 2 denotes a top plate, 3 denotes a gas burner, and 4 denotes a gas burner.

Reference numeral 5 denotes a light emitter (light source) of a light-shielding type optical sensor attached to the front left end of the top plate 2, and reference numeral 6 denotes a light receiver (sensor).

FIG. 2 shows the safety device. Reference numeral 7 denotes a gas line leading to the gas burner 3, 8 denotes an electromagnetic valve (safety valve) attached to the gas line 7, and 9 denotes a thermocouple which is heated by the flame of the gas burner 3 to generate an electromotive force. Is held open by the fire extinguishing safety circuit 10 by the electromotive force of the thermocouple 9,
It is configured to close when the electromotive force extinguishes.

11 is a relay inserted in the fire-extinguishing safety circuit 10, 12 is a fire safety circuit for opening and closing the relay 11, and this fire safety circuit 12 includes a power source 13, an AC amplifier 14, the projector 5, the light receiver 6, and When the light emitted from the light emitter 5 is shielded by a sleeve or the like, the AC amplifier 14 is activated to close the ignition safety circuit 12, and the relay 11 is activated to operate the relay 11 as shown in FIG. The relay switch 11 'in the circuit 10 is opened, the solenoid valve 8 is closed, and the gas burner 3 is extinguished. Although the present embodiment combines the fire safety circuit 12 with the fire safety circuit 10, the solenoid valve in the gas line 7 separately provided by the fire safety circuit 12 may be directly closed.

[Effects of the present invention] As described above, according to the present invention, when a sleeve or the like of clothes enters a flammable area while a gas stove is in use, a sensor detects this and extinguishes the gas burner, so that there is no fear of burns or fire. Safe without any. In particular, the present invention has a safe effect for elderly people, people with physical disabilities, children and the like.

[Brief description of the drawings]

FIG. 1 is a perspective view of a gas stove embodying the present invention, and FIG.
FIG. 3 is a circuit diagram showing the configuration of the safety device and its operation. DESCRIPTION OF SYMBOLS 1 ... Gas stove main body, 2 ... Top plate 3 ... Gas burner 4, ... Gotoku 5 ... Emitter, 6 ... Receiver 7 ... Gas line 8 ... Solenoid valve (safety valve), 9 ... Thermocouple 10 …… Fire extinguishing safety device, 11 …… Relay 11 ′ …… Relay switch 12 …… Fire safety circuit, 13… Power supply 14 …… AC amplifier

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F23N 5/24 F24C 3/12

Claims (4)

(57) [Claims] A sensor for detecting that clothing has entered the flash area; and a safety valve for stopping gas and extinguishing the gas burner when a signal indicating that clothing has entered the flash area is input from the sensor. A gas stove with a flash safety device. 2. The sensor according to claim 1, wherein the sensor comprises a light-shielded light sensor.
A gas stove with a flash safety device as described. 3. The gas stove according to claim 1, wherein the sensor comprises an ultrasonic sensor. 4. A light transmitter as an optical sensor is mounted on one end of the gas stove near the front side near the top plate, and a light receiver is mounted on the opposite side. A safety valve is mounted in a gas line leading to a gas burner. Together with a thermocouple near a gas burner or a pilot gas burner; a fire extinguisher safety circuit with a relay for holding the safety valve open with the electromotive force of the thermocouple and closing when the electromotive force disappears; and the optical sensor 2. A flash safety circuit according to claim 1, further comprising: a flash safety circuit that, when the light emitted from the light emitter toward the light receiver is cut off, causes a current to flow in the circuit to activate the relay and open the fire safety circuit. Gas stove with safety device.